yr11IPT- Displaying

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    Tools for Information Processes: Displaying

    Name: ___________________________

    Displaying is the method by which information is output from the system to meet a purpose.

    Displaying is considered a sub-process within other information process. Eg- when collecting data

    online a monitor is used to display the data entry form. So whenever a person receives information

    from a system, a displaying information process has occurred.

    Any device that performs actions based on information from a system is a display device. This

    includes any output device that includes visual and audio aspects.

    Software is used to interface with display hardware and it is also used to prepare information into a

    suitable form for display. Choosing the most effective method of display enhances the information,

    which means the systems purpose is more effectively achieved.

    HARDWARE FOR DISPLAYING

    Types of hardware for displaying:

    Screens:

    Video cards (display adaptors) LCD (liquid crystal display) based monitors CRT (cathode ray tube) based monitors Plasma screens Projectors Interactive Whiteboard (IWBs)

    Printers:

    Laser Printers Inkjet printers

    Audio display:

    Sound cards Speakers

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    TASK: Using your textbook, fill in the information for the following headings. Include what it

    is and how it works.

    Screens: Information to be displayed on a screen is received by the video system via the system

    bus. It is mostly obtained from the main memory without direct processing by the CPU. The video

    system contains the video card (or display adaptor) which translates the data into a form that can bedisplayed by the screen.

    Video cards (display adaptors): ___________________________________________________________________________________________

    ____________________________________________________

    _______________________________________________

    __________________________________________

    ____________________________________________

    _______________________________________________________

    LCD (liquid crystal display): __________________________________________________________________________________________________________________________

    __________________________________________________________________________

    __________________________________________________________________________

    __________________________________________________________________________

    _____________________________

    _____________________________

    _____________________________

    _____________________________

    _____________________________

    _____________________________

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    CRT (cathode ray tube): __________________________________________________________________________________________________

    ________________________________________________

    ________________________________________________

    ________________________________________________

    ________________________________________________

    ________________________________________________

    ________________________________________________

    ______________________________________________________

    Plasma screens: __________________________________________________________________________________________________________________________________

    _________________________________________________________________________

    _________________________________________________________________________

    _________________________________________________________________________

    _________________________________________________________________________

    _________________________________________________________________________

    THINK

    LCD based computer monitors have

    almost completely replaced CRT based

    monitors. Why do you think this has occurred?

    __________________________________

    __________________________________

    __________________________________

    __________________________________

    __________________________________

    __________________________________

    __________________________________

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    Projectors (include LCOS, DMD & GLV): ___________________________________________________________________________________________

    ____________________________________________________

    ____________________________________________________

    ____________________________________________________

    ____________________________________________________

    ____________________________________________________

    ____________________________________________________

    ____________________________________________________

    ____________________________________________________

    o Interactive Whiteboards (IWBs): ______________________________________________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

    __________________________________________________________________

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    Printers: Printers produce hard copies of electronic documents to be stored in a physical form.

    Some printers receive data via USB connection, where as many network printers use Ethernet or

    wireless to connect directly to the LAN. Printers can either be impact; contact is made with the

    paper, or non-impact; the printing head does not strike the paper. The most common types of

    printers available are laser and inkjet printers.

    THINK -Can you name any other types of printers? __________________________________

    ________________________________________________________________________________

    Laser Printers: ______________________________________________________________________________________________________________________

    ________________________________________________________

    ________________________________________________________

    ________________________________________________________

    ________________________________________________________

    ________________________________________________________

    Inkjet Printer: ____________________________________________________________________________________________________________________________________________

    _____________________________________________________________________________

    _____________________________________________________________________________

    _____________________________________________________________________________

    ____________________________________________________________

    ____________________________________________________________

    _________________________________________________

    THINK - What type of printers are laser and inkjet? Impact or non-impact?_______________

    ________________________________________________________________________________

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    Audio Display: is basically the idea of audio as a representation of data. Speakers and sound cards

    are examples of audio display. The components within speakers are similar to those found within

    microphones; the processes occurring to display audio are essentially the reverse of the processes

    occurring during audio collection. Older sound cards were used for both collection and display of

    sound however could not use both aspects at the same time. Modern designs allow for simultaneous

    use of collection and display, which is full duplex.

    Sound Card: ________________________________________________________________________________________________________________________________________________

    ________________________________________________________________________________

    ______________________________________________________

    _____________________________________________

    ______________________________________

    ______________________________________

    __________________________________________________

    Speakers: ____________________________________________________________________________________________________________________________________________

    _____________________________________________________________________________

    ____________________________________________

    ____________________________________________

    ____________________________________________

    ____________________________________________

    ____________________________________________

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    SOFTWARE FOR DISPLAY

    Software used by the displaying information process includes all the various display features present

    within all software applications. The manipulation of the information design improves the

    presentation of information in preparation for display. The purpose is to produce the information in

    a structure that